We meet the highest ranked sumo wrestler, Mongolian Asashoryu. and delve into the hidden culture of this ancient sport. Sumo. More than a sport in Japan, it's a religion. Its history goes back 2000 years, with time-honored Shinto rituals and ceremonies originating from the ancient martial art called "Tegoi". Crashing into this tradition-bound world is Mongolian "outsider" Asashoryu. He's a rule-breaker. A rebel. And much to the chagrin of the sumo-crazy Japanese, he's their reigning champion. T...